Fluid-controlling means



.March 13, 1928.

c. L. SNOW FLUID CONTROLLING mums Filed March F 7tesi'er l WITNESS:

- ATTORNEY Patented Mar. 13, 1928.

UNITED "STATES CHESTER L. SNOW, 'OF WASHINGTON, DISTRICT OF COLUMBIA.

FLUID-CONTROLLING MEANS.

Application filed March 7, 1927. Serial No. 173,541

This invention relates to cooling systems for internal combustionenglnes and its primary object is to provide a fluid controlling meanstherefor whereby the circulation of the cooling fluid is automaticallycontrolled in consistency with the temperature of the fluid.

A further object of the invention is to provide a fluid controllingmeans for the cooling system of an internal combustion engine, whichfunctions independently of the engine speed and controls the circulationof the cooling fluid for the engine in accordance with the temperatureconditions.

This invention also consists in certain other features of constructionand in the combination and arrangement of the several parts, to behereinafter fully described, illustrated in the accompanying drawingsand. specifically pointed out in the appended claim.

In describing my invention in detail, reference will be had to theaccompanying drawings wherein like characters denote like orcorresponding parts throughout the several views, and in which:

Figure 1 is a diagrammatic view illustrating the application of myinvention to an internal combustion engine.

Figure 2 is a fragmentary viewshowing the fluid pump thereof.

Figure 3 is a vertical sectional view taken through a portion of theengine and showing the thermostat and its association with the rheostatboth ofwhich form. a part of my invention.

' Figure 1 is a sectional view taken. on line 14 of Figure 5.

Figure 5 is a sectional view taken on line 5-5 of Figure 3.

Referring to the drawings in detail the letter A'indicates an internalcombustion engine of the usual. construction and B the radiator of thecooling system thereof.

Secured to the front of the engine A and being in communication with thewater jacket of the latter and radiator B respectively is the casing 1ofa fluid pump 2. Passing-through the casing and arrying the blades ofthe pump 2 is a shaft 3 having fixed to its outer end the fan 4,.anddisposed. between the ends of said shaft is a pulley 5 having trainedthereabout a. belt 6 which is likewise trained about a similar pulley 7secured to the shaft of an electric 'motor.8 whereby said motor willoperate the pump as will be readily apparent,

The means I employ for-controlling the operation of the motor 8 includesa thermostat 9 mounted in a housing 10 threadedly secured in one sidewall of the Water jacket of the engine in a manner whereby the innerportion of the housing 10 will be in. direct contact with the coolingfluid in the water jacket. The thermostat 9 has secured to one portionthereof a rod ll-which is guided by an annular flange 12 formed in theclosure member of the thermostat housing and said rod 11 has its'outerend frictionally secured to a link 13 which in turn is pivotally securedto. an arm 1 1 fixed to' the outer end. of a shaft 15 which hassecuredthereto the lower end of the contact member 16 of a rheostat. Therheostat is in electricaliconnection with the motor 8 through the mediumof the conductor 17.

. From the above description and disclosure in the drawings, it will beobvious that the temperature of the fluid in the water jacket of theengine as shown will control the operation of the mot-or 8 due to thethermostat 9 and its operative connection with the rheostat 18 and whichwill move the contact member 16 with respect to the resistance unit 19of the rheostat and thereby cause varied operation of the motor 8, itdepending of course upon the temperature of fluid in the water jacket. Ihave also provided a switch 20 arranged in convenient reach of thedriver of the motor vehicle as suggested in Figure 1 whereby the currentfrom the battery can be controlled to the rheostat as well as the motor8 through the medium of the conductors 22, 23 and 24.

It is thought from the foregoing description that the advantages andnovel features of my invention will be readily apparent.

I desire it 'to be understood that I may make changes in theconstruction and in the combination and arrangement of the severalparts, provided that such changes fall within the scope of the appendedclaim.

VVha-t claim is:

The combination with an internal combustion engine and its coolingsystem, together with the radiator of the latter, of a fluid pump incommunication with the fluid jacket of the engine and radiatorrespectively, an electric motor supported by the engine, means betweensaid electric motor and pump g I I 1,009,723

for operating the latter, a housin arra arm normally depending from saidshaft 1 in the fluid acket, a thermostat ispose in and having connectionwith said rod, a consaid housing so as to be acted upon by the tactmember secured to said shaft for movetemperature of thefluid in thejacket, :1 cloment on theresistance unit of the rheostat,

5 sure for said housing, a rod passing. throu h a source of energy, andconductors betiveen the closure. and secured to a portion of t e thesource of energy, motor and rheostat re- 5 thermostat for movementtheneby, a rheospectiyely. stat disposed inolose proximity to the hous-In testimony whereof I afli'x my si a-ture. ing, a. shaft included inSaid rheostat, an 1 CHESTER L. S OW.

